I hope you have enjoyed the book. You should be able to download the code from here: http://www.manning.com/campbell/code/. I just checked the site. It may have been temporarily down when you originally checked. Please try again.

Hi,Chad.I really enjoy this book,Even though I am not so good at English,but I can still easily to understand what it say.Thank you for writing so good a book!
I still can not down load the source code,I have try it for many times. I can't open
http://www.manning.com/campbell/code/ event http://www.manning.com! What a pity!
Could you give me a help,chad?Thank you!